*{
    margin: 0;
    padding: 0;
}
.w{
    width: 1200px;
    margin: auto;
}
body{
    background-color: #f3f5f7;
}
a{
    text-decoration: none;
}
li{
    list-style: none;
}
.clearfix:before,.clearfix:after{
    content: "";
    display: table;
}
.clearfix:after{
    clear: both;
}
.clearfix{
    *zoom:1; 
}
.header{
    height: 42px;
    margin: 30px auto;
}
.logo{
    float: left;
    width: 198px;
    height: 42px;
}
.nav{
    float: left;
    margin-left: 60px;
}
.nav ul li{
    float: left;
    margin: 0 15px;
}
.nav ul li a{
    display: block;
    height: 42px;
    padding: 0 10px;
    line-height: 42px;
    font-size: 18px;
    color: #050505;
}
.nav ul li a:hover{
    border-bottom: 2px solid #00a4ff;
    color: #00a4ff;
}
/* 搜索模块 */
.search{
    float: left;
    width: 412px;
    height: 42px;
    margin-left: 50px;
}
.search input{
    float: left;
    width: 345px;
    height: 40px;
    border: 1px solid #00a4ff;
    border-right: 0;
    color: #bfbfbf;
    font-size: 14px;
    padding-left: 15px;
}
.search button{
    float: left;
    width: 50px;
    height: 42px;
    /* 按钮默认边框 */
    border: 0;
    background: url(images/btn.png);
}
.user{
    float: right;
    line-height: 42px;
    margin-right: 30px; 
    font-size: 14px;
    color:#666
}
/* 图片和文字中线对齐 */
.user img{
    vertical-align: middle;
}
/* banner区域 */
.banner{
     height: 421px;
     background-color: #1c036c;
}
.banner .w{
    height: 421px;
    background: url(images/banner2.png) no-repeat top center;
}
.subnav{
    float: left;
    width: 190px;
    height: 421px;
    background:rgba(0,0,0,.3);
}
.subnav ul li{
    font-size: 14px;
    line-height: 45px;
    padding: 0 20px ;
}
.subnav ul .li1{
    padding-top: 10px;
}
.subnav ul li a{
    font-size: 14px;
    color: #fff;
}
.subnav ul li a span{
    float: right;
}
.subnav ul li a:hover{
    color: #00a4ff;
}
.course{
    float: right;
    width: 230px;
    height: 300px;
    background-color: #fff;
    /* 浮动的盒子不会有外边距合并 */
    margin-top: 50px;
}
.course h2{
    height: 48px;
    background-color: #9bceea;
    text-align: center;
    line-height: 48px;
    font-size: 18px;
    color: #fff;
}
.bd{
    padding: 0 20px;
}
.bd ul li{
    padding: 14px 0;
    border-bottom: 1px solid #ccc;
}
.bd ul li h4{
    font-size: 16px;
    color: #4e4e4e;
}
.bd ul li p{
    font-size: 12px;
    color: #a5a5a5;
}
.bd .more{
    display: block;
    height: 38px;
    border: 1px solid #00a4ff;
    margin-top: 5px;
    text-align: center;
    line-height: 38px;
    font-size: 16px;
    font-weight: 700;
    color: #00a4ff;
}
/* 精品推荐模块 */
.goods{
    height: 60px;
    background-color: #fff;
    margin-top: 10px;
    box-shadow: 0 2px 3px 3px rgba(0,0,0,.1);
    line-height: 60px;
}
.goods h3 { 
    float: left;
    margin-left: 30px;
    font-size: 16px;
    color: #00a4ff;
}
.goods ul{
    float: left;
    margin-left: 30px;
}
.goods ul li{
    float: left;
}
.goods ul li a{
    padding: 0 30px;
    font-size: 16px;
    color: #050505;
    border-left: 1px solid #ccc;
}
.mod{
    float: right;
    margin-right: 30px;
    font-size: 14px;
    color: #00a4ff;
}
/* box模块 */
.box{
    margin-top: 30px;
}
.box-hd{
    height: 45px;
}
.box-hd h3{
    float: left;
    font-size: 20px;
    color: #494949;
}
.box-hd a{
    float: right;
    font-size: 12px;
    color: #a5a5a5;
    margin-top: 10px;
    margin-right: 30px;
}
/* 把li的父亲ul修改的足够宽一行就能装下5个盒子就不会换行了 */
.box-bd ul{
    width: 1225px;
}
.box-bd ul li{
    position: relative;
    float: left;
    width: 228px;
    height: 270px;
    background-color: #fff;
    margin-right: 15px;
    margin-bottom: 15px;
}
.box-bd ul li > img{
    width: 100%;
}
.box-bd ul li h4{
    margin: 20px 20px 20px 25px;
    font-size: 14px;
    color: #050505;
    font-weight: 400;
}
.box-bd ul li em{
    position: absolute;
    top: 4px;
    right: -4px;
}
.box-bd .info{
    margin: 20px 20px 20px 25px;
    font-size: 12px;
    color: #999;
}
.box-bd .info span{
    color: #ff7c2d;
}
.box1{
    margin-top: 15px;
}
.box1-hd{
    height: 45px;
}
.box1-hd h3{
    float: left;
    font-size: 20px;
    color: #494949;
}
.box1-hd ul{
    float: left;
    font-size: 16px;
    margin-left: 350px;
}
.box1-hd ul li{
    float: left;
    font-size: 16px;
    margin-right: 66px;
    font-weight: 700;
}
.box1-hd ul li a:hover{
    color: #00a4ff;
}
.box1-hd a{
    float: right;
    font-size: 12px;
    color: #a5a5a5;
    margin-right: 20px;
    margin-top: 10px;
}
.box1-bd .left-column{
    float: left;
    width: 229px;
}
.box1-bd .left-column img{
        width: 100%;
}
.box1-bd .right-column{
    float: left;
    width: 957px;
    margin-left: 14px;
}
.box1-bd .right-column ul{
    width: 1225px;
    margin-top: 20px;
}
.box1-bd .right-column ul li{
    float: left;
    width: 228px;
    height: 270px;
    background-color: #fff;
    margin-right: 15px;
    margin-bottom: 15px;
}
.box1-bd .right-column ul li img{
    width: 100%;
}
.box1-bd .right-column ul li h4{
    height: 35px;
    margin: 20px 20px 20px 25px;
    font-size: 14px;
    color: #050505;
    font-weight: 400;   
}
.box1-bd .info{
    margin: 20px 20px 20px 25px;
    font-size: 12px;
    color: #999;
}
.box1-bd .info span{
    color: #ff7c2d;
}
/* footer模块 */
.footer{
    height: 415px;
    background-color: #fff;
}
.footer .w{
    padding-top: 35px;
}
.copyright{
    float: left;
}
.copyright p{
    font-size: 12px;
    color: #666;
    margin: 20px 0 15px 0;
}
.copyright .app{
    display: block;
    width: 118px;
    height: 33px;
    border: 1px solid #00a4ff;
    text-align: center;
    line-height: 33px;
    color: #00a4ff;
    font-size: 16px;
}
.links{
    float: right;
}
.links dl{
    float: left;
    margin-left: 100px;
}
.links dl dt{
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}
.links dl dd a{
    color: #333;
    font-size: 12px;
}
